논문 국내 국내전문학술지(KCI급) Oxidation behavior of oxide particle spray-deposited Mo-Si-B alloys
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2007-11
- 저자명 김하영,J. H. Perepezko,김정민공동(참여),박준식
- 학술지명 열처리공학회지
- 발행처명 한국열처리공학회
- 발행국가 국내
- 논문언어 한국어
홈페이지논문 초록 (Abstract)
The effect of spray deposition of oxide particles on oxidation behaviors of as-cast Mo-14.2Si-9.6B (at%) alloys at $1200^{\circ}C$ up to for 100 hrs has been investigated. Various oxide powders are utilized to make coatings by spray deposition, including $SiO_2,\;TiO_2,\;ZrO_2,\;HfO_2$ and $La_2O_3$. It is demonstrated that the oxidation resistance of the cast Mo-Si-B alloy can be significantly improved by coating with those oxide particles. The growth of the oxide layer is reduced for the oxide particle coated Mo-Si-B alloy. Especially, for the alloy with $ZrO_2$ coating, the thickness of oxide layer becomes only one fifth of that of uncoated alloys when exposed to in air for 100 hrs. The reduction of oxide scale growth of the cast Mo-Si-B alloy due to oxide particle coatings are discussed in terms of the change of viscosity of glassy oxide phases that form during oxidation at high temperature.